CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Former IAC	Former Match Group and ANGI Homeservices	Match Group	Redeemable Noncontrolling Interests	Redeemable Noncontrolling Interests Former IAC	Total Match Group Shareholders’ Equity	Total Match Group Shareholders’ Equity Former IAC	Total Match Group Shareholders’ Equity Former Match Group and ANGI Homeservices	Total Match Group Shareholders’ Equity Match Group	Common Stock	Common Stock Match Group	Common Stock Common Stock $0.001 Par Value	Common Stock Common Stock $0.001 Par Value Former IAC	Common Stock Former IAC Common Stock $0.001 Par Value	Common Stock Former IAC Common Stock $0.001 Par Value Former IAC	Common Stock Former IAC Class B Convertible Common Stock $0.001 Par Value	Common Stock Former IAC Class B Convertible Common Stock $0.001 Par Value Former IAC	Additional Paid-in Capital	Additional Paid-in Capital Former IAC	Additional Paid-in Capital Former Match Group and ANGI Homeservices	Additional Paid-in Capital Match Group	Retained Deficit	Accumulated Other Comprehensive (Loss) Income	Accumulated Other Comprehensive (Loss) Income Former IAC	Accumulated Other Comprehensive (Loss) Income Former Match Group and ANGI Homeservices	Treasury Stock	Noncontrolling Interests	Noncontrolling Interests Former IAC	Noncontrolling Interests Former Match Group and ANGI Homeservices
Balance at beginning of period at Dec. 31, 2019					$ 44,527
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	$ 60,266				(2,070)
Other comprehensive loss, net of tax					(686)
Stock-based compensation expense					15
Purchase of redeemable noncontrolling interests					(3,165)
Adjustment of redeemable noncontrolling interests to fair value					4,807
Exchange Former IAC common stock and Class B common stock for Match Group common stock and completion of the Separation					(43,583)
Other					(1)
Balance at end of period at Jun. 30, 2020					(156)
Balance at beginning of period at Dec. 31, 2019	3,627,800						$ 2,657,524						$ 0		$ 263		$ 16		$ 11,378,160				$ 1,725,046	$ (136,349)			$ (10,309,612)	$ 970,276
Balance at beginning of period (shares) at Dec. 31, 2019													0		263,230		16,157
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	(65,577)						(127,913)																(127,913)					62,336
Other comprehensive loss, net of tax	(2,775)						(2,372)																	(2,372)				(403)
Stock-based compensation expense	159,422						73,059												73,059									86,363
Issuance of common stock pursuant to stock-based awards, net of withholding taxes		$ (34,517)						$ (34,517)								$ 1				$ (34,518)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)																453
Issuance of Former Match Group and ANGI Homeservices common stock pursuant to stock-based awards, net of withholding taxes			$ (223,047)						$ (211,642)												$ (212,270)					$ 628				$ (11,405)
Adjustment of redeemable noncontrolling interests to fair value	(4,807)						(4,807)												(4,807)
Purchase of Match Group and ANGI treasury stock			(187,735)						(187,735)												(187,735)
Retire treasury stock															$ (184)		$ (10)		194				(10,309,612)				10,309,612
Retire treasury stock (shares)															(184,340)		(10,368)
Exchange Former IAC common stock and Class B common stock for Match Group common stock and completion of the Separation	(5,230,433)						(4,731,641)						$ 184		$ (80)		$ (6)		(4,745,520)					13,781				(498,792)
Exchange Former IAC common stock and Class B common stock for Match Group common stock and Separation (shares)													183,749		(79,343)		(5,789)
Acquire Former Match Group noncontrolling interest							608,168						$ 58						608,110									(608,168)
Acquire Former Match Group noncontrolling interest (shares)													57,868
Other	(1)						(131)												(131)									130
Balance at end of period at Jun. 30, 2020	(1,961,670)						(1,962,007)						$ 242		$ 0		$ 0		6,874,542				(8,712,479)	(124,312)			0	337
Balance at end of period (shares) at Jun. 30, 2020													241,617		0		0
Balance at beginning of period at Mar. 31, 2020					42,431
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	31,869				(608)
Other comprehensive loss, net of tax					(785)
Adjustment of redeemable noncontrolling interests to fair value					2,389
Exchange Former IAC common stock and Class B common stock for Match Group common stock and completion of the Separation						$ (43,583)
Balance at end of period at Jun. 30, 2020					(156)
Balance at beginning of period at Mar. 31, 2020	3,192,516						2,162,102						$ 0		$ 264		$ 16		11,106,503				1,522,216	(157,285)			(10,309,612)	1,030,414
Balance at beginning of period (shares) at Mar. 31, 2020													0		263,502		16,157
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	107,394						74,917																74,917					32,477
Other comprehensive loss, net of tax	23,429						18,967																	18,967				4,462
Stock-based compensation expense	103,337						61,560												61,560									41,777
Issuance of common stock pursuant to stock-based awards, net of withholding taxes		(14,002)	(74,443)					(14,002)	(72,480)											(14,002)	(72,705)					$ 225				$ (1,963)
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)																181
Adjustment of redeemable noncontrolling interests to fair value	(2,389)						(2,389)												(2,389)
Purchase of Match Group and ANGI treasury stock			$ (67,077)						$ (67,077)												$ (67,077)
Retire treasury stock															$ (184)		$ (10)		194				(10,309,612)				10,309,612
Retire treasury stock (shares)															(184,340)		(10,368)
Exchange Former IAC common stock and Class B common stock for Match Group common stock and completion of the Separation		$ (5,230,433)						$ (4,731,641)						$ 184		$ (80)		$ (6)		$ (4,745,520)					$ 13,781				$ (498,792)
Exchange Former IAC common stock and Class B common stock for Match Group common stock and Separation (shares)														183,749		(79,343)		(5,789)
Acquire Former Match Group noncontrolling interest							608,168						$ 58						608,110									(608,168)
Acquire Former Match Group noncontrolling interest (shares)													57,868
Other	(2)						(132)												(132)									130
Balance at end of period at Jun. 30, 2020	(1,961,670)						(1,962,007)						$ 242		$ 0		$ 0		6,874,542				(8,712,479)	(124,312)			$ 0	337
Balance at end of period (shares) at Jun. 30, 2020													241,617		0		0
Balance at beginning of period at Dec. 31, 2020	640				640
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	(768)				(935)
Adjustment of redeemable noncontrolling interests to fair value					1,535
Balance at end of period at Jun. 30, 2021	1,240				1,240
Balance at beginning of period at Dec. 31, 2020	(1,413,375)						(1,414,417)				$ 267								7,089,007				(8,422,237)	(81,454)				1,042
Balance at beginning of period (shares) at Dec. 31, 2020											267,329
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	315,312						315,145																315,145					167
Other comprehensive loss, net of tax	(22,745)						(22,635)																	(22,635)				(110)
Stock-based compensation expense	76,087						76,087												76,087
Issuance of common stock pursuant to stock-based awards, net of withholding taxes				$ 25,978						$ 25,978		$ 4										$ 25,974
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)												3,395
Issuance of common stock for the acquisition of Hyperconnect	890,851						890,851				$ 6								890,845
Issuance of common stock for the acquisition of Hyperconnect (shares)											5,929
Adjustment of redeemable noncontrolling interests to fair value	(1,535)						(1,535)												(1,535)
Purchase of noncontrolling interest	(1,628)						943												943									(2,571)
Noncontrolling interest created by the exercise of subsidiary denominated equity awards	0						(7,102)												(7,102)									7,102
Other							(3,725)												(3,725)
Balance at end of period at Jun. 30, 2021	(135,088)						(142,245)				$ 277								8,068,659				(8,107,092)	(104,089)				7,157
Balance at end of period (shares) at Jun. 30, 2021											276,653
Balance at beginning of period at Mar. 31, 2021					1,040
Increase (Decrease) in Redeemable Noncontrolling Interests
Net (loss) earnings	(366)				(525)
Adjustment of redeemable noncontrolling interests to fair value					725
Balance at end of period at Jun. 30, 2021	1,240				$ 1,240
Balance at beginning of period at Mar. 31, 2021	(1,212,907)						(1,213,924)				$ 270								7,135,823				(8,247,987)	(102,030)				1,017
Balance at beginning of period (shares) at Mar. 31, 2021											270,082
Increase (Decrease) in Shareholders' Equity
Net (loss) earnings	141,054						140,895																140,895					159
Other comprehensive loss, net of tax	(2,136)						(2,059)																	(2,059)				(77)
Stock-based compensation expense	44,656						44,656												44,656
Issuance of common stock pursuant to stock-based awards, net of withholding taxes	6,553						6,553				$ 1								6,552
Issuance of common stock pursuant to stock-based awards, net of withholding taxes (shares)											642
Issuance of common stock for the acquisition of Hyperconnect	890,851						890,851				$ 6								890,845
Issuance of common stock for the acquisition of Hyperconnect (shares)											5,929
Adjustment of redeemable noncontrolling interests to fair value	(725)						(725)												(725)
Adjustment of noncontrolling interests to fair value	0						(1,835)												(1,835)									1,835
Purchase of noncontrolling interest	(1,628)						943												943									(2,571)
Noncontrolling interest created by the exercise of subsidiary denominated equity awards	0						(7,102)												(7,102)									7,102
Other	(4,033)						(498)												(498)									(308)
Balance at end of period at Jun. 30, 2021	$ (135,088)						$ (142,245)				$ 277								$ 8,068,659				$ (8,107,092)	$ (104,089)				$ 7,157
Balance at end of period (shares) at Jun. 30, 2021											276,653